The nlmclnt_mark_reclaim in clntlock.c in NFS lockd in Linux kernel before 2.6.16 allows…
Priority LOW 39CWE-667Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-667 and the CVSS impact.
Summary
The nlmclnt_mark_reclaim in clntlock.c in NFS lockd in Linux kernel before 2.6.16 allows remote attackers to cause a denial of service (process crash) and deny access to NFS exports via unspecified vectors that trigger a kernel oops (null dereference) and a deadlock.
Why it matters now
EPSS 0.0372 89th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 2.6.16 | Vulnerable | Linux |
| cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_eus:4.5:*:*:*:*:*:*:* | 4.5 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:* | 5.10 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* | 6.06 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:* | 6.10 | Vulnerable | Canonical |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 2.6.16 Vulnerable ·Linux
- cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_eus:4.5:*:*:*:*:*:*:* Versions 4.5 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:* Versions 5.10 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* Versions 6.06 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:* Versions 6.10 Vulnerable ·Canonical
Remediation
Red Hat 1 advisory
- RHSA-2007:0488 Released 2007-06-25 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AS version 4 kernel-2.6.9-55.0.2.EL, kernel-2.6.9-55.0.2.EL.ia64, kernel-2.6.9-55.0.2.EL.ppc64iseries +14
- Red Hat Enterprise Linux Desktop version 4 kernel-2.6.9-55.0.2.EL, kernel-devel-2.6.9-55.0.2.EL, kernel-doc-2.6.9-55.0.2.EL +8
- Red Hat Enterprise Linux ES version 4 kernel-2.6.9-55.0.2.EL, kernel-2.6.9-55.0.2.EL.ia64, kernel-devel-2.6.9-55.0.2.EL +12
- Red Hat Enterprise Linux WS version 4 kernel-2.6.9-55.0.2.EL, kernel-2.6.9-55.0.2.EL.ia64, kernel-devel-2.6.9-55.0.2.EL +12
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2007:0488 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2007:0488 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2007:0488 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2007:0488 |
Timeline
- 2026-10-02 Threatist record created from CVE-2006-5158
- 2026-10-03 Alias added: GHSA-339c-xph3-fj7g
References
Advisory 4
Sources
- CVE-2006-5158 · CVE Program
- CVE-2006-5158 · NVD
- FIRST EPSS
- GHSA-339c-xph3-fj7g · GitHub Advisory Database · CC BY 4.0
- CVE-2006-5158 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences